From patchwork Wed Nov 11 19:27:44 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 7597521 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 327E69F1C2 for ; Wed, 11 Nov 2015 19:29:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8E87B20656 for ; Wed, 11 Nov 2015 19:29:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 85B1E20619 for ; Wed, 11 Nov 2015 19:29:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752627AbbKKT2T (ORCPT ); Wed, 11 Nov 2015 14:28:19 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:35002 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751048AbbKKT2O (ORCPT ); Wed, 11 Nov 2015 14:28:14 -0500 Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id tABJRkS4031321 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 11 Nov 2015 19:27:46 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserv0021.oracle.com (8.13.8/8.13.8) with ESMTP id tABJRk42031163 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Wed, 11 Nov 2015 19:27:46 GMT Received: from abhmp0017.oracle.com (abhmp0017.oracle.com [141.146.116.23]) by aserv0122.oracle.com (8.13.8/8.13.8) with ESMTP id tABJRkCe002302; Wed, 11 Nov 2015 19:27:46 GMT Received: from localhost (/24.21.154.84) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 11 Nov 2015 11:27:46 -0800 Subject: [PATCH 11/11] reflink: test that CoW writes fail when we're out of space From: "Darrick J. Wong" To: hch@infradead.org, david@fromorbit.com, darrick.wong@oracle.com Cc: fstests@vger.kernel.org, xfs@oss.sgi.com, tao.peng@primarydata.com, linux-ext4@vger.kernel.org, Anna.Schumaker@netapp.com, linux-btrfs@vger.kernel.org Date: Wed, 11 Nov 2015 11:27:44 -0800 Message-ID: <20151111192744.15056.4781.stgit@birch.djwong.org> In-Reply-To: <20151111192628.15056.6451.stgit@birch.djwong.org> References: <20151111192628.15056.6451.stgit@birch.djwong.org> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Source-IP: aserv0021.oracle.com [141.146.126.233] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Ensure that copy-on-writing a reflinked file when there's no free disk space reflects the desired ENOSPC back to userspace during the write call. Tests the buffered IO, direct IO, and mmap write paths. Signed-off-by: Darrick J. Wong --- common/rc | 2 - tests/generic/842 | 107 ++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/842.out | 10 ++++ tests/generic/843 | 107 ++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/843.out | 10 ++++ tests/generic/844 | 109 +++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/844.out | 8 ++++ tests/generic/845 | 107 ++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/845.out | 10 ++++ tests/generic/group | 4 ++ 10 files changed, 473 insertions(+), 1 deletion(-) create mode 100755 tests/generic/842 create mode 100644 tests/generic/842.out create mode 100755 tests/generic/843 create mode 100644 tests/generic/843.out create mode 100755 tests/generic/844 create mode 100644 tests/generic/844.out create mode 100755 tests/generic/845 create mode 100644 tests/generic/845.out -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/common/rc b/common/rc index c016673..474fa84 100644 --- a/common/rc +++ b/common/rc @@ -101,7 +101,7 @@ _mwrite_byte() { mmap_len="$4" file="$5" - "$XFS_IO_PROG" -f -c "mmap -rw 0 $mmap_len" -c "pwrite -S $pattern $offset $len" "$file" + "$XFS_IO_PROG" -f -c "mmap -rw 0 $mmap_len" -c "mwrite -S $pattern $offset $len" "$file" } # ls -l w/ selinux sometimes puts a dot at the end: diff --git a/tests/generic/842 b/tests/generic/842 new file mode 100755 index 0000000..5eda56b --- /dev/null +++ b/tests/generic/842 @@ -0,0 +1,107 @@ +#! /bin/bash +# FS QA Test No. 842 +# +# Reflink a file, use up the rest of the space, then try to observe ENOSPC +# while copy-on-writing the file via the page cache. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +#----------------------------------------------------------------------- + +seq=`basename "$0"` +seqres="$RESULT_DIR/$seq" +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + cd / + rm -rf "$tmp".* "$TESTDIR1" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_scratch_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +echo "Format and mount" +_scratch_mkfs > "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 + +TESTDIR="$SCRATCH_MNT/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +NR_BLKS=10240 +umount "$SCRATCH_MNT" +SZ_BYTES=$((NR_BLKS * 8 * BLKSZ)) +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create a big file and reflink it" +_pwrite_byte 0x61 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" >> "$seqres.full" 2>&1 +_cp_reflink "$TESTDIR/bigfile" "$TESTDIR/clonefile" +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' "$TESTDIR")" +touch "$TESTDIR/file0" "$TESTDIR/file1" +_pwrite_byte 0x61 0 $((BLKSZ * NR_FREE)) "$TESTDIR/eat_my_space" >> "$seqres.full" 2>&1 +sync + +echo "CoW the big file" +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +echo "Remount and try CoW again" +_scratch_remount + +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount "$SCRATCH_MNT" +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/842.out b/tests/generic/842.out new file mode 100644 index 0000000..df58025 --- /dev/null +++ b/tests/generic/842.out @@ -0,0 +1,10 @@ +QA output created by 842 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +CoW the big file +pwrite64: No space left on device +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/843 b/tests/generic/843 new file mode 100755 index 0000000..03dc570 --- /dev/null +++ b/tests/generic/843 @@ -0,0 +1,107 @@ +#! /bin/bash +# FS QA Test No. 843 +# +# Reflink a file that uses more than half of the space, then try to observe +# ENOSPC while copy-on-writing the file via the page cache. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +#----------------------------------------------------------------------- + +seq=`basename "$0"` +seqres="$RESULT_DIR/$seq" +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + cd / + rm -rf "$tmp".* "$TESTDIR1" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_scratch_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +echo "Format and mount" +_scratch_mkfs > "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 + +TESTDIR="$SCRATCH_MNT/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +NR_BLKS=10240 +umount "$SCRATCH_MNT" +SZ_BYTES=$((NR_BLKS * 3 / 2 * BLKSZ)) +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create a big file and reflink it" +_pwrite_byte 0x61 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" >> "$seqres.full" 2>&1 +_cp_reflink "$TESTDIR/bigfile" "$TESTDIR/clonefile" +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' "$TESTDIR")" +touch "$TESTDIR/file0" "$TESTDIR/file1" +_pwrite_byte 0x61 0 $((BLKSZ * NR_FREE)) "$TESTDIR/eat_my_space" >> "$seqres.full" 2>&1 +sync + +echo "CoW the big file" +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +echo "Remount and try CoW again" +_scratch_remount + +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount "$SCRATCH_MNT" +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/843.out b/tests/generic/843.out new file mode 100644 index 0000000..43c1cf6 --- /dev/null +++ b/tests/generic/843.out @@ -0,0 +1,10 @@ +QA output created by 843 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +CoW the big file +pwrite64: No space left on device +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/844 b/tests/generic/844 new file mode 100755 index 0000000..70bc235 --- /dev/null +++ b/tests/generic/844 @@ -0,0 +1,109 @@ +#! /bin/bash +# FS QA Test No. 844 +# +# Reflink a file, use up the rest of the space, then try to observe ENOSPC +# while copy-on-writing the file via mmap. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +#----------------------------------------------------------------------- + +seq=`basename "$0"` +seqres="$RESULT_DIR/$seq" +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + cd / + rm -rf "$tmp".* "$TESTDIR1" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_scratch_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +echo "Format and mount" +_scratch_mkfs > "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 + +TESTDIR="$SCRATCH_MNT/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +NR_BLKS=10240 +umount "$SCRATCH_MNT" +SZ_BYTES=$((NR_BLKS * 8 * BLKSZ)) +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create a big file and reflink it" +_pwrite_byte 0x61 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" >> "$seqres.full" 2>&1 +_cp_reflink "$TESTDIR/bigfile" "$TESTDIR/clonefile" +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' "$TESTDIR")" +touch "$TESTDIR/file0" "$TESTDIR/file1" +_pwrite_byte 0x61 0 $((BLKSZ * NR_FREE)) "$TESTDIR/eat_my_space" >> "$seqres.full" 2>&1 +sync + +echo "mmap CoW the big file" +out="$(_mwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +err="$?" +if [ "$err" -lt 128 ]; then + echo "mmap CoW should have failed with SIGBUS, got SIG$(kill -l $err)" +fi + +echo "Remount and try CoW again" +_scratch_remount + +out="$(_mwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" 2>&1)" +err="$?" +if [ "$err" -lt 128 ]; then + echo "mmap CoW should have failed with SIGBUS, got SIG$(kill -l $err)" +fi + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount "$SCRATCH_MNT" +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/844.out b/tests/generic/844.out new file mode 100644 index 0000000..130afc1 --- /dev/null +++ b/tests/generic/844.out @@ -0,0 +1,8 @@ +QA output created by 844 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +mmap CoW the big file +Remount and try CoW again +Check scratch fs diff --git a/tests/generic/845 b/tests/generic/845 new file mode 100755 index 0000000..5efaf38 --- /dev/null +++ b/tests/generic/845 @@ -0,0 +1,107 @@ +#! /bin/bash +# FS QA Test No. 845 +# +# Reflink a file, use up the rest of the space, then try to observe ENOSPC +# while copy-on-writing the file via direct-io. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +#----------------------------------------------------------------------- + +seq=`basename "$0"` +seqres="$RESULT_DIR/$seq" +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + cd / + rm -rf "$tmp".* "$TESTDIR1" +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/reflink + +# real QA test starts here +_supported_os Linux +_require_scratch_reflink +_require_cp_reflink + +rm -f "$seqres.full" + +echo "Format and mount" +_scratch_mkfs > "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 + +TESTDIR="$SCRATCH_MNT/test-$seq" +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Reformat with appropriate size" +BLKSZ="$(stat -f "$TESTDIR" -c '%S')" +NR_BLKS=10240 +umount "$SCRATCH_MNT" +SZ_BYTES=$((NR_BLKS * 8 * BLKSZ)) +if [ $SZ_BYTES -lt $((32 * 1048576)) ]; then + SZ_BYTES=$((32 * 1048576)) +fi +_scratch_mkfs_sized $SZ_BYTES >> "$seqres.full" 2>&1 +_scratch_mount >> "$seqres.full" 2>&1 +rm -rf "$TESTDIR" +mkdir "$TESTDIR" + +echo "Create a big file and reflink it" +_pwrite_byte 0x61 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" >> "$seqres.full" 2>&1 +_cp_reflink "$TESTDIR/bigfile" "$TESTDIR/clonefile" +sync + +echo "Allocate the rest of the space" +NR_FREE="$(stat -f -c '%f' "$TESTDIR")" +touch "$TESTDIR/file0" "$TESTDIR/file1" +_pwrite_byte 0x61 0 $((BLKSZ * NR_FREE)) "$TESTDIR/eat_my_space" >> "$seqres.full" 2>&1 +sync + +echo "CoW the big file" +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" -d 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +echo "Remount and try CoW again" +_scratch_remount + +out="$(_pwrite_byte 0x62 0 $((BLKSZ * NR_BLKS)) "$TESTDIR/bigfile" -d 2>&1)" +echo "${out}" | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC" +echo "${out}" >> "$seqres.full" 2>&1 +echo "${out}" + +#filefrag -v $TESTDIR/bigfile +#filefrag -v $TESTDIR/clonefile + +echo "Check scratch fs" +umount "$SCRATCH_MNT" +_check_scratch_fs + +# success, all done +status=0 +exit diff --git a/tests/generic/845.out b/tests/generic/845.out new file mode 100644 index 0000000..d367a73 --- /dev/null +++ b/tests/generic/845.out @@ -0,0 +1,10 @@ +QA output created by 845 +Format and mount +Reformat with appropriate size +Create a big file and reflink it +Allocate the rest of the space +CoW the big file +pwrite64: No space left on device +Remount and try CoW again +pwrite64: No space left on device +Check scratch fs diff --git a/tests/generic/group b/tests/generic/group index eef608f..e184473 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -249,4 +249,8 @@ 839 auto quick clone 840 clone_stress 841 clone_stress +842 auto quick clone +843 auto quick clone +844 auto quick clone +845 auto quick clone 846 auto quick clone